Code Snippets and Tips for Java

Java Classes

• Base64Coder: A Base64 encoder/decoder class
• MiniConnectionPoolManager: A JDBC connection pool manager
• RawConsoleInput: Read single characters from the console without blocking
• TelnetStdioRedirector: Redirect stdin/stdout via Telnet to a connecting client
• Idea: Encryption using the IDEA algorithm
• ByteRingBuffer: A ring buffer (circular buffer, FIFO) for bytes
• LRUCache: An LRU cache class
• Crc16: Fast byte-wise 16-bit CRC calculation
• JoinClassLoader: A class loader that combines multiple class loaders into one
• DecayingCounter: An exponentially time-decaying counter

Java Classes for Android

• I2cBusDriver: An I2C bus driver class for Android
• SerialPortChannel: A serial port driver class for Android
• SimpleAdbClient: A simple client for the Android Debugger (ADB)
• UsbIso: An USB isochronous transfer controller

Java Code Snippets

• Convert number to words
• Parse an URL query string
• Decode a time value and add it to the current date
• Parse quoted strings with java.util.Scanner
• Encrypt 64-bit blocks with Blowfish
• Resize an array

Java Tools

• FileMirrorSync: A file mirror synchronization tool

Client-side browser graphics in Java

• GWT station clock: A clock animation implemented with GWT and HTML5 Canvas
• "Station clock" Java applet (with anti-aliasing)